JP3750809B2 - Damper with rotation resistance - Google Patents

Damper with rotation resistance Download PDF

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Publication number
JP3750809B2
JP3750809B2 JP2002218083A JP2002218083A JP3750809B2 JP 3750809 B2 JP3750809 B2 JP 3750809B2 JP 2002218083 A JP2002218083 A JP 2002218083A JP 2002218083 A JP2002218083 A JP 2002218083A JP 3750809 B2 JP3750809 B2 JP 3750809B2
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JP
Japan
Prior art keywords
damper
lid
cabinet
outer cylinder
cylinder member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP2002218083A
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Japanese (ja)
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JP2003083388A (en
Inventor
孝彦 稲荷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nifco Inc
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Nifco Inc
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Filing date
Publication date
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Priority to JP2002218083A priority Critical patent/JP3750809B2/en
Publication of JP2003083388A publication Critical patent/JP2003083388A/en
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Publication of JP3750809B2 publication Critical patent/JP3750809B2/en
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Description

【0001】
【産業上の利用分野】
本発明は、回動抵抗付与ダンパに関し、特にキャビネットに軸支されたリッドに回動抵抗を付与するためのダンパに関するものである。
【0002】
【従来の技術】
例えばビデオカセットレコーダのカセット挿入口には、キャビネット内に塵埃が侵入することを防止するためのリッドが設けられる。このリッドは、一端がキャビネットに軸支され、他端が自由になっており、一般に振動でふらついたりすることを防止するために、適度な回動抵抗を加えるためのダンパがリッドの支軸に連結されている。
【0003】
従来、この回動抵抗付与ダンパとしては、油の粘性抵抗を利用したものが良く知られており、例えば実開平3−123083号公報に開示されているように、支軸の軸端にギヤを介して、或いは直結にて連結される形式のものが公知となっている。
【0004】
【発明が解決しようとする課題】
上記従来形式のダンパは、リッドの軸線方向端部に設けるものであるため、同部分の軸線方向寸法に少なからぬ影響を及ぼすことがあり、寸法的な制約がある場合の組付性に難点がある。
【0005】
本発明は、このような従来技術の不都合を解消するべく案出されたものであり、その主な目的は、リッド回りの寸法に及ぼす影響が小さく、しかも組付性に優れた回動抵抗付与ダンパを提供することにある。
【0006】
【課題を解決するための手段】
このような目的は、本発明によれば、キャビネット(3)に軸支されたリッド(1)に回動抵抗を付与するためのダンパであって、有底筒状をなす外筒部材(ケース6)、該外筒部材の内面に回動自在に嵌入し且つ前記外筒部材の開口からその一端を突出させた軸部材(シャフト7)、および前記外筒部材と前記軸部材との間に回動抵抗を加えるための回動抵抗発生手段を有するダンパ本体(5)と、ダンパ本体を受容するべく前記リッドに形成されたダンパ受容部(8)と、該ダンパ受容部の一方の軸方向端と前記外筒部材の底面との間に設けられた軸方向凸部(突起15)および軸方向凹部(孔14)からなる係合手段と、前記軸部材の一端を回り止めして係合させるべく前記ダンパ受容部の他方の軸方向端に設けられた半径方向に開く把持部(12)と、前記ダンパを装着した状態のリッドを前記キャビネットに装着した時に前記外筒部材の外周面の一部(平面部18)に係合して前記外筒部材を前記キャビネットと一体化するべく前記キャビネットに設けられた回り止め手段(リブ19)とを有すると共に、前記ダンパ本体の前記軸部材および前記ダンパ受容部の前記把持部の軸心と、前記軸方向凹部および前記軸方向凸部の軸心とが、前記キャビネットに対する前記リッドの回動軸心と共通の軸線上に延在することを特徴とする回動抵抗付与ダンパを提供することによって達成される。
【0007】
【作用】
このような構成によれば、外筒部材がキャビネットに対して静止状態で、かつリッドと相対回動可能となり、軸部材がリッドに対して静止状態で、かつキャビネットと相対回動可能となる。従って、外筒部材と軸部材間に回動抵抗を加えることにより、キャビネットに軸支されたリッドに回動抵抗が加わることとなる。
【0008】
【実施例】
以下に添付の図面に示された具体的な実施例に基づいて本発明の構成を詳細に説明する。
【0009】
図1は、本発明に基づき構成されたダンパを適用したリッドを示している。このリッド1は、概ね平板状をなし、その上縁と平行な軸線Xに沿う向きに左右の側縁に突起2が突設されており、この突起2をキャビネット3の内面に設けられた軸受孔4に突入させることにより、その下端を前後に揺動可能なようにキャビネット3に枢支されている。
【0010】
ダンパ5は、有底筒状をなすケース6と、ケース6の内面に回動自在に、かつ液密に摺合した中空のシャフト7とからなっており、リッド1の上縁部の適所に設けられた受容部8内に、リッド1の支持軸の軸線Xと共通の軸線上に延設されている。
【0011】
ケース6の開口には、シャフト7を挿通した上でシャフト挿通孔を液密に閉じるべく、Oリング9を介してキャップ10が嵌着されている。そしてシャフト7のケース6からの突出端11には、中心を挟む対称位置に平坦面が形成されており、リッド1に形成されたダンパ受容部8の一方の軸線方向端に設けられた半径方向に開く把持部12に対し、この突出端11が回り止めされた状態で係合している(図2参照)。
【0012】
ケース6の底部には、軸線方向に沿う孔(凹部)14が穿設されており、リッド1に形成されたダンパ受容部8の他方の軸線方向端に突設された突起(凸部)15が突入し、前記した軸線X回りでケース6がリッド1と相対回動可能になっている。
【0013】
ダンパ5を受容部8に装着する時は、先ず、ダンパ受容部8の他方の軸線方向端に突設された突起15をケース6の底部の孔14に突入させ、次に、シャフト7のケース6からの突出端11を把持部12の開口に径方向の外側から押しつければ良く、把持部12が弾性変形して突出端11を受け入れると、把持部12の開口の抜止爪13が突出端11の脱落を防止するようになっている。
【0014】
シャフト7の中空部16には、シリコンオイルが封入されている。またシャフト7には、複数の貫通孔17が穿設されており、シリコンオイルの粘性抵抗により、ケース6とシャフト7間に回動抵抗が作用するようになっている。
【0015】
ケース6は、軸線に直交する断面の外形輪郭が、半円形と矩形とを組み合わせたU字形をなしており、ケース6の外周面の一部に、接線に平行する平坦面からなる平面部18が形成されている。他方、キャビネット3の内面には、平面部18に当接し得るようにリブ19が設けられており、このリブ19に対してケース6の平面部18が係止することにより、キャビネット3に対してケース6が回り止めされている(図3参照)。
【0016】
次に本発明装置の作動要領について説明する。リッド1の下縁を押すと、リッド1は上縁側を支点として回動する。リッド1と共にシャフト7が回動すると、ダンパ5のケース6はキャビネット3に回り止めされているので、ケース6とリッド1間に回動変位が生じる。するとシリコンオイルによる粘性抵抗がシャフト7に加わり、シャフト7に連結されたリッド1に回動抵抗が作用することとなる。
【0017】
なお、上記実施例に於ては、回動抵抗発生手段としてケース6内に封入したシリコンオイルの粘性抵抗を利用するものとしたが、ケース6とシャフト7間を捩りコイルばねで連結し、これの捩り抵抗による回動抵抗を付与するように構成することもできる。
【0018】
【発明の効果】
このように本発明によれば、回動抵抗を発揮するダンパをリッドの回動軸上に予め組み付けておくことができると共に、キャビネットにリッドを組み付けることでキャビネットとダンパ間が連結されるようになるので、組付け性を高める上に大きな効果が得られる。しかもリッドの軸方向寸法内にダンパを収めることができるので、全体寸法に及ぼす影響を殆ど皆無にすることができる。
【図面の簡単な説明】
【図1】本発明装置の取付状態を一部切除して示す要部正面図。
【図2】図1に於けるII−II線に沿う断面図。
【図3】図1に於けるIII−III線に沿う断面図。
【図4】本発明装置の外観図であり、(a)は平面を、(b)は正面を、(c)は底面を、(d)は左側面を、(e)は右側面を、それぞれ表す。
【符号の説明】
1 リッド
2 突起
3 キャビネット
4 軸受孔
5 ダンパ
6 ケース
7 シャフト
8 受容部
9 Oリング
10 キャップ
11 突出端
12 把持部
13 抜止爪
14 孔
15 突起
16 中空部
17 貫通孔
18 平面部
19 リブ
[0001]
[Industrial application fields]
The present invention relates to a rotational resistance imparting damper, and more particularly to a damper for imparting rotational resistance to a lid pivotally supported by a cabinet.
[0002]
[Prior art]
For example, a lid for preventing dust from entering the cabinet is provided at the cassette insertion slot of the video cassette recorder. This lid has one end pivotally supported by the cabinet and the other end is free. Generally, a damper for applying an appropriate rotational resistance is provided on the lid pivot to prevent it from wobbling due to vibration. It is connected.
[0003]
Conventionally, as this rotation resistance imparting damper, one using a viscous resistance of oil is well known. For example, as disclosed in Japanese Utility Model Laid-Open No. 3-123083, a gear is attached to the shaft end of the support shaft. The thing of the form connected via a direct connection is known.
[0004]
[Problems to be solved by the invention]
Since the conventional damper is provided at the end of the lid in the axial direction, the axial dimension of the part may be affected considerably, and there is a difficulty in assembling when there are dimensional restrictions. is there.
[0005]
The present invention has been devised to eliminate such disadvantages of the prior art, and its main purpose is to provide a rotational resistance that has a small effect on the dimensions around the lid and is excellent in assembling. To provide a damper.
[0006]
[Means for Solving the Problems]
According to the present invention, such an object is a damper for imparting rotational resistance to the lid (1) pivotally supported by the cabinet (3), and is an outer cylinder member (case) having a bottomed cylindrical shape. 6) A shaft member (shaft 7) that is rotatably fitted on the inner surface of the outer cylinder member and has one end protruding from the opening of the outer cylinder member, and between the outer cylinder member and the shaft member A damper main body (5) having a rotation resistance generating means for applying a rotation resistance, a damper receiving portion (8) formed on the lid to receive the damper main body, and one axial direction of the damper receiving portion Engagement means comprising an axial convex portion (protrusion 15) and an axial concave portion (hole 14) provided between the end and the bottom surface of the outer cylindrical member, and one end of the shaft member being prevented from rotating. To open in the radial direction provided at the other axial end of the damper receiving part When the holding part (12) and the lid with the damper attached are attached to the cabinet, the outer cylindrical member is engaged with the cabinet by engaging with a part of the outer peripheral surface (the flat part 18) of the outer cylinder member. A rotation preventing means (rib 19) provided in the cabinet to be integrated, the shaft member of the damper main body and the axis of the gripping portion of the damper receiving portion, the axial recess and the shaft This is achieved by providing a rotational resistance imparting damper characterized in that the axial center of the directional protrusion extends on a common axis with the rotational axis of the lid relative to the cabinet .
[0007]
[Action]
According to such a configuration, the outer cylinder member is stationary with respect to the cabinet and can be rotated relative to the lid, and the shaft member is stationary with respect to the lid and can be rotated relative to the cabinet. Therefore, by adding a rotation resistance between the outer cylinder member and the shaft member, the rotation resistance is applied to the lid pivotally supported by the cabinet.
[0008]
【Example】
Hereinafter, the configuration of the present invention will be described in detail based on specific embodiments shown in the accompanying drawings.
[0009]
FIG. 1 shows a lid to which a damper constructed according to the present invention is applied. The lid 1 has a generally flat plate shape, and protrusions 2 are provided on the left and right side edges in a direction along an axis X parallel to the upper edge thereof. The protrusions 2 are provided on the inner surface of the cabinet 3. By being inserted into the hole 4, it is pivotally supported by the cabinet 3 so that its lower end can be swung back and forth.
[0010]
The damper 5 includes a case 6 having a bottomed cylindrical shape, and a hollow shaft 7 that is pivotably and liquid-slidably engaged with the inner surface of the case 6. The damper 5 is provided at an appropriate position on the upper edge of the lid 1. The receiving portion 8 is extended on the same axis as the axis X of the support shaft of the lid 1.
[0011]
A cap 10 is fitted into the opening of the case 6 via an O-ring 9 so as to close the shaft insertion hole in a liquid-tight manner after the shaft 7 is inserted. A flat surface is formed on the projecting end 11 of the shaft 7 from the case 6 at a symmetrical position with the center in between, and a radial direction provided at one axial end of the damper receiving portion 8 formed on the lid 1. The projecting end 11 is engaged with the gripping portion 12 that is opened in a closed state (see FIG. 2).
[0012]
A hole (concave portion) 14 extending in the axial direction is formed in the bottom portion of the case 6, and a projection (convex portion) 15 protruding from the other axial end of the damper receiving portion 8 formed in the lid 1. And the case 6 can rotate relative to the lid 1 around the axis X described above.
[0013]
When the damper 5 is mounted on the receiving portion 8, first, the protrusion 15 protruding from the other axial end of the damper receiving portion 8 is inserted into the hole 14 at the bottom of the case 6, and then the case of the shaft 7. The protruding end 11 from 6 is pressed against the opening of the gripping portion 12 from the outside in the radial direction. When the gripping portion 12 is elastically deformed and receives the protruding end 11, the retaining claw 13 of the opening of the gripping portion 12 is 11 is prevented from falling off.
[0014]
Silicone oil is sealed in the hollow portion 16 of the shaft 7. The shaft 7 is provided with a plurality of through holes 17 so that a rotational resistance acts between the case 6 and the shaft 7 due to the viscous resistance of silicon oil.
[0015]
The case 6 has a U-shaped outer contour whose cross section perpendicular to the axis is a combination of a semicircular shape and a rectangular shape, and a flat portion 18 formed of a flat surface parallel to a tangent on a part of the outer peripheral surface of the case 6. Is formed. On the other hand, a rib 19 is provided on the inner surface of the cabinet 3 so as to be in contact with the flat portion 18, and the flat portion 18 of the case 6 is locked to the rib 19, thereby The case 6 is prevented from rotating (see FIG. 3).
[0016]
Next, the operating procedure of the device of the present invention will be described. When the lower edge of the lid 1 is pushed, the lid 1 rotates with the upper edge side as a fulcrum. When the shaft 7 rotates together with the lid 1, the case 6 of the damper 5 is prevented from rotating around the cabinet 3, so that a rotational displacement occurs between the case 6 and the lid 1. Then, a viscous resistance due to silicon oil is applied to the shaft 7, and a rotational resistance acts on the lid 1 connected to the shaft 7.
[0017]
In the above embodiment, the viscous resistance of silicon oil sealed in the case 6 is used as the rotational resistance generating means. However, the case 6 and the shaft 7 are connected by a torsion coil spring. It is also possible to provide a rotational resistance due to the torsional resistance.
[0018]
【The invention's effect】
As described above, according to the present invention, the damper exhibiting the rotation resistance can be assembled in advance on the rotation axis of the lid, and the cabinet and the damper can be connected by assembling the lid to the cabinet. Therefore, a great effect can be obtained in improving the assemblability. Moreover, since the damper can be accommodated in the axial dimension of the lid, the influence on the overall dimension can be almost eliminated.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a front view of an essential part of a mounting state of a device of the present invention.
2 is a cross-sectional view taken along the line II-II in FIG.
3 is a cross-sectional view taken along line III-III in FIG.
FIG. 4 is an external view of the device of the present invention, in which (a) is a plane, (b) is a front surface, (c) is a bottom surface, (d) is a left side surface, (e) is a right side surface, Represent each.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Lid 2 Protrusion 3 Cabinet 4 Bearing hole 5 Damper 6 Case 7 Shaft 8 Receiving part 9 O-ring 10 Cap 11 Protruding end 12 Holding part 13 Stopping claw 14 Hole 15 Protrusion 16 Hollow part 17 Through-hole 18 Flat part 19 Rib

Claims (1)

キャビネットに軸支されたリッドに回動抵抗を付与するためのダンパであって、
有底筒状をなす外筒部材、該外筒部材の内面に回動自在に嵌入し且つ前記外筒部材の開口からその一端を突出させた軸部材、および前記外筒部材と前記軸部材との間に回動抵抗を加えるための回動抵抗発生手段を有するダンパ本体と、
該ダンパ本体を受容するべく前記リッドに形成されたダンパ受容部と、
該ダンパ受容部の一方の軸方向端と前記外筒部材の底面との間に設けられた軸方向凸部および軸方向凹部からなる係合手段と、
前記軸部材の一端を回り止めして係合させるべく前記ダンパ受容部の他方の軸方向端に設けられた半径方向に開く把持部と、
前記ダンパを装着した状態のリッドを前記キャビネットに装着した時に前記外筒部材の外周面の一部に係合して前記外筒部材を前記キャビネットと一体化するべく前記キャビネットに設けられた回り止め手段とを有すると共に、
前記ダンパ本体の前記軸部材および前記ダンパ受容部の前記把持部の軸心と、前記軸方向凹部および前記軸方向凸部の軸心とが、前記キャビネットに対する前記リッドの回動軸心と共通の軸線上に延在することを特徴とする回動抵抗付与ダンパ。
A damper for imparting rotational resistance to the lid pivotally supported by the cabinet,
An outer cylinder member having a bottomed cylindrical shape, a shaft member that is rotatably fitted to the inner surface of the outer cylinder member and has one end protruding from an opening of the outer cylinder member, and the outer cylinder member and the shaft member A damper main body having a rotation resistance generating means for applying a rotation resistance between,
A damper receiving portion formed on the lid to receive the damper body;
Engagement means comprising an axial convex portion and an axial concave portion provided between one axial end of the damper receiving portion and the bottom surface of the outer cylinder member;
A gripping portion that is provided at the other axial end of the damper receiving portion and that opens in a radial direction so as to stop and engage one end of the shaft member;
A detent provided in the cabinet so that the outer cylinder member is integrated with the cabinet by engaging a part of the outer peripheral surface of the outer cylinder member when the lid with the damper attached is attached to the cabinet. and having a means,
The shaft member of the damper body and the shaft center of the gripping portion of the damper receiving portion, and the shaft center of the axial recess and the axial protrusion are common to the pivot axis of the lid with respect to the cabinet. A rotation resistance imparting damper characterized by extending on an axis .
JP2002218083A 2002-07-26 2002-07-26 Damper with rotation resistance Expired - Lifetime JP3750809B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002218083A JP3750809B2 (en) 2002-07-26 2002-07-26 Damper with rotation resistance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002218083A JP3750809B2 (en) 2002-07-26 2002-07-26 Damper with rotation resistance

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP6251176A Division JPH0893823A (en) 1994-09-19 1994-09-19 Rotational movement resistance imparting damper

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2005110537A Division JP3750818B2 (en) 2005-04-07 2005-04-07 Damper with rotation resistance

Publications (2)

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JP2003083388A JP2003083388A (en) 2003-03-19
JP3750809B2 true JP3750809B2 (en) 2006-03-01

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